Archive · 28 Jan 2026
High-Voltage Graphene Supercapacitor Developed for EVs, Grid Storage
Scientists have created a new type of supercapacitor, which is like a super battery, using a special material called porous graphene carbon nanocomposite (PGCN).
This new supercapacitor can handle higher voltages (3.4 V) compared to regular ones (2.5-3.0 V), making it safer and more stable.
It can store 33% more energy, which means electric cars can go farther and faster.
The supercapacitor also lasts a long time, keeping 96% of its power even after 15,000 charges and discharges.
The material is made in an eco-friendly way using a process that doesn't harm the environment.
This new technology could be used in electric vehicles, solar panels, and even small electronics like phones.
Researchers developed a high-voltage supercapacitor using dual-functional porous graphene carbon nanocomposite (PGCN) electrodes, achieving an operating voltage of 3.4 V.
The supercapacitor offers 33% higher energy storage, improved power output, and excellent long-term stability, making it suitable for electric vehicles, grid storage, and portable electronics.
The PGCN material is both water-repellent and highly compatible with organic electrolytes, suppressing degradation and enhancing ion transport and electrochemical efficiency.
The production process is eco-friendly, using hydrothermal carbonisation with 1,2-propanediol as the precursor, and is scalable for industrial production.
The supercapacitor retains 96% of its performance after 15,000 charge-discharge cycles, demonstrating exceptional durability and consistent performance.
- Who
- Researchers at the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI)
- What
- Developed a high-voltage supercapacitor using dual-functional porous graphene carbon nanocomposite (PGCN) electrodes
- When
- Details released on Wednesday (specific date not mentioned)
- Where
- India (ARCI is an autonomous institute of the Department of Science and Technology, India)
- Why
- To improve energy storage, stability, and safety for applications in electric vehicles, grid storage, and portable electronics
- Operating Voltage
- 3.4 V
- Energy Density Improvement
- 33% higher
- Performance Retention
- 96% after 15,000 cycles
- Power Density
- 17,000 W/kg
- Production Process
- Eco-friendly hydrothermal carbonisation
- Research Institute
- International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI)